Magnetic head slider having stepped surfaces

1. A magnetic head slider comprising: a slider; and a magnetic device disposed on a trailing edge of the slider and configured to at least one of write a signal to or read a signal from a magnetic disk, wherein a disk-facing surface of the slider comprises: a magnetic device surface disposed on a trailing side, rising toward the magnetic disk, and where a surface of the magnetic device is exposed; raised leading surfaces disposed on a leading side opposite the trailing side, raised to the height of the magnetic device surface, and separated in a width direction orthogonal to a length direction extending from the trailing side to the leading side; a pair of rail surfaces raised to the height of the magnetic device surface and connecting the magnetic device surface to the raised leading surfaces; a recessed area disposed outside of the rail surfaces in a width direction, raised to a lowest level in height; and a step surface extending from an area between the raised leading surfaces to a leading edge of the magnetic device surface, being raised to a level lower than the magnetic device surface and higher than the recessed area.